ClassAggregateFunction
Represents the basic class that supports creating functions that provide statistical information about a set of items.
Definition
Namespace:Telerik.Windows.Data
Assembly:Telerik.Windows.Data.dll
Syntax:
public abstract class AggregateFunction : INotifyPropertyChangedInheritance: objectAggregateFunction
Derived Classes:
Implements:
Constructors
AggregateFunction()
Declaration
protected AggregateFunction()Properties
Caption
Gets or sets the informative message to display as an illustration of the aggregate function.
Declaration
public string Caption { get; set; }Property Value
The caption to display as an illustration of the aggregate function.
FunctionName
Gets or sets the name of the aggregate function, which appears as a property of the group record on which records the function works.
Declaration
public virtual string FunctionName { get; set; }Property Value
The name of the function as visible from the group record.
ResultFormatString
Gets or sets a string that is used to format the result value.
Declaration
public virtual string ResultFormatString { get; set; }Property Value
The format string.
Methods
CreateAggregateExpression(Expression)
Creates the aggregate expression that is used for constructing expression tree that will calculate the aggregate result.
Declaration
public abstract Expression CreateAggregateExpression(Expression enumerableExpression)Parameters
enumerableExpression
The grouping expression.
Returns
GenerateFunctionName()
Generates default name for this function using this type's name.
Merge(object, AggregateResultMergeAction, AggregateResult, QueryableCollectionViewGroup)
Merges the specified item into the aggregate result according to the specified action.
Declaration
public virtual object Merge(object item, AggregateResultMergeAction mergeAction, AggregateResult originalAggregateResult, QueryableCollectionViewGroup group)Parameters
item
The item.
mergeAction
The action.
originalAggregateResult
The original aggregate result.
group
The group which the item is being added to or removed from.
Returns
The new value of the aggregate result.
OnPropertyChanged(string)
Raise PropertyChanged Event.
Declaration
protected virtual void OnPropertyChanged(string propertyName)Parameters
propertyName
The property name.
Events
PropertyChanged
Occurs when a property value changes.
Declaration
public event PropertyChangedEventHandler PropertyChangedEvent Value
Implements